Place corned beef, water, garlic powder and cracked pepper in a large heavy pot with a tight-fitting cover. Bring to boil and simmer for 1 1/2 - 2 hours or until meat is tender. Carrots and onions should be added to meat 30 minutes before cooking time is up.
2
Add cabbage and potatoes and cook an additional 30 minutes.
3
Prepare sour cream sauce by combining sour cream and horseradish.
4
Slice corned beef and place in the center of a large platter; surround with vegetables.
